Disappearance of Tetradifon from Field-Sprayed Apricots and the Apricot Juice Produced from Them

The disappearance of tetradifon residues was studied in an experiment on field-sprayed apricots. The pesticide was applied according to the recommended application procedures in Greece. Apricots received a single application with tetradifon at rates of 11.56 and 14.45 g of ai/100 L. Residues were determined with a simple gas chromatographic method; the recovery of tetradifon from apricots was found to be 99-105% and the limit of determination 0.004 mg/kg. Tetradifon residues were found to dissipate relatively rapidly, with a half-life of 7 days, and in all cases the residues were lower than the maximum residue limits of most European countries. The transfer of tetradifon residues from the fruits into the apricot juice produced from them, after processing, was approximately 20% of the total residues of the fruit